Filling machine



L. D. NELS ON FILLING MACHINE March 30 1926. 1,578,748

Filed March '20, 1924 6 sh t -s t 1 INVENTOR.

March 30 1926;

| D/NELSON FILLING MACHINE I Filed March 20, 1924 e Sheets-sheaf; 2

Lewis LDJIe/son 1 L'Mw A TTORNEYS I N VEN TOR.

March 30,1926. 4 1,578,748

L. D. NELSON FILLING momma Filed March 20, 1924 6 sheets-sheet 5 53INVENORf' 1 JIL Lewis 10. lie' laon.

' w idi ATTORNEYS" q 1,578,748 I L. D. NELSON FILLING MACHINE March"30"; 926.

Filed March 20', 1 24 s Sheets-Sheet 4 INVENTOR'. BITE [Lewis 0. NelsonA TTORNEYS A March I I I Q ,748

FILLING MACHINE Filed Marbh 20, 1924 6 sheets shee 5 INVENTOR.

ATTORNEYJ March 30 1926. 1,578,748

L. .0. NELSON FILLING MACHINE Filed March 20, 1 6 Sheets-Sheet 6INVENTOR. La w/s DJIeLson Patented Mar. 30, 1926.

UNITED STATES PATENT OFFICE.

LEWIS D. NELSON, OI COLDWATER, MICHIGAN,ASSIGNOR OF TWO-THIRDS T ROBERTM. NEALE AND WILLIAM M. HATCH, BOTH 0F UNION CITY, MICHIGAN.

FILLING MACHINE.

To all whom it mag concern:

Be it known'that I, Lnwls D. NELSON, a citizen of ,theUnited States,residing at Goldwater,- county of Branch, State of Michigan, haveinvented certain new and useful Improvements in Filling Machines, ofwhich the following 1s a specificatlon.

This invention relates to improvements 1n fillling machines.

My improvements are especially designed by me for embodiment in bagfilling machines for cement, plaster and the like and I have shown mynnprovements as I have embodied them in a bag filling machine, althoughthey are'adapted for use in other relations.

The main objects of this invention are: First, to provide an improvedbag filling machine for ,heavy material such as cement which isautomatic in its operation. I

Secondpto provide an improved filling machine whichflis of very largecapacity.

following specification.

Third, to provide an improved filling ma chine having these advantageswhich is not likely to get outof repair in use.

- Objects pertaining to details and economies of construction andoperation will definitely appear from the detailed descripton to follow.

I accomplish the objects of my invention in the accompanying drawingforming a part of this application,-1n which:

Fig. I is a front elevation of a structure embodying the features of myinvention, a portion of the hopper'and a portion of the base of themachine being broken away. I

Fig II is a side elevation looking from the right of Fig. I withportions of the hopper, base and discharge chutebroken away.

Fig. III is a front elevation correspond-' ing to Fig. I with the partsin another position, theldischarging movement having just taken place.

Fig. IV is a front elevation corresponding .to Fig. III with the partsin another posi tion.

V is a detail view mainly in vertical section on a line corresponding toline 55 of Figs. I and VI.

- Application filed March 20, 1924. Serial No. 700,567.

Fig. VI is a detail view mainly in vertical section on a linecorresponding to line 66- of Fig. V. I

Fig. VII is a detail view partially in section on a line correspondingto line 77 of Fig. V.

Fig. VIII is a plan view of the agitators.

In the drawing the sectional views are taken looking in the direction ofthe little arrows at the ends of the section lines and similar numeralsof reference refer to similar parts throughout the several views.

Referring to the drawing, I provide a frame consisting of a base 1having a pedestal 2 mounted thereon carrying the hopper 3 and theejector cylinder 4:, this cylinder being connected to the bottom of thehopper by the chute or feed inlet extension 5 of the cylinder. Thecylinder has a tangential discharge passage 6, see Fig. V. Within thecylinder is a rotor or impeller designated generally by the numeral 7and comprising a spider 8 having radial arms. For convenience inassembling the impeller is made up of sections as shown in Fig. V.

The cylinder wall is continued at 11 through the chute or passage 5leading to the hopper but has side inlet openings 12 communicating withthe hopper discharge.

This prevents the cement or other material from falling directly uponthe blades or its weight resting directly thereon, but-allows it to flowin at the sides of the impeller in the quantities which the impeller isadapted to handle and prevents packing or clogging. The rotor shaft 13is driven-from the belt l4 and the pulley 15 on the shaft 16.

Within the hopper I provide an agitator comprising a vertical shaft 17having a plurality of radial arms 18 disposed in spiral relationthereon, these arms being inclined forwardly so that when the agitatoris r0- tated the arms ten-d to lift the material upwardly, at the sametime stirring and agitating it so that it falls into the chute 5 bygravity only and is not packed therein, there being no tendency of theagitator to feed the material forwardly but merely 'to prevent itsbanking or clogging in the hopper and to insure that it is delivered tothe ejecting rotor in the most desirable form 1Igor discharging from thecylinder into the ags. 1

The shaft 17 is supported by a bearing bracket 19 arranged within thehopper, the

shaft 17 having aworm gear 20 thereon meshing with the driving Worm 21on the shaft 22., This shaft 22 is driven from a belt 23 and a pulley 24on the shaft 16.

With this arrangement of parts the cement or like material is veryrapidly discharged and at the same time the tendency to clog or pack orchoke the cylinder is minimized.

The machine is designed to deliver into valve bags which are slippedupon the spouts 25. One of the bags is indicated at 26. The spouts 25are pivotally mounted at 27 on the carrier 28' which is in turn mountedon thescale beam 29 pivoted at 30 and provided with a weight shownconventionally at 31. This spout carrier also serves the function of avalve for the discharge opening 6 of the ejector cylinder, the carrierhaving two openings .32 therein adapted to alternately register withtheopening 6 of the cylinder. The carrier being pivotally mounted upon thescale beam has an oscillating movement on its pivot and also an up anddown movement on the scale beam, or raises and lowers as the scalebeam'is actuated.

To automatically oscillate the member 28 I provide a yoke 33, the samebeing formed, in the structure illustrated, in the upper end of themember 28 and an actuating lever 34 pivoted at 35 to engage this' yoke,the lever being actuated by the spring 36 slidably engaging the slottedarm 37 on the upper end of the lever. Vith the parts thus arranged,

when the, member 28 is raised the spring is placed under stress storingpower for the actuating, of the lever.

\Vhen the carrier is lowered as by the tilting of the scale beam underthe weight of a filled bag, thelever is swung by the spring to theopposite end of the yoke, thereby actuating the carrier. It is intendedthat the operator shall place a bag upon the spout, that is, ininoperative position, while a bag is being filled so that as soon as thedischarge passage of the ejector cylinder is uncovered the bag isplacedto receive it. The spouts are automatically returned to their horizontalpositions by the coiled springs 38 arranged on their pivots.

The spouts are supportedin their horizontal position by the keeper arm39 which projects through an opening 40 in the member 28 depending atthe front thereof so that, the upwardly projecting arms 41 on thespout-s swing under the keeper. When the carrier moves downwardly withthe tilting of the scale beam these arms pass from under the keeperallowing the spout to tilt under the weight of the filled bag and thebag to slip therefrom. The arm 39 is provided with a thrust bearing 42under which the member 28 oscillates, the same serving as a lateral.support.

I provide a platform 43 which is pivotalyoke 49, this platform hangerbeing carried by the scale beam. Thelat ch 47 is held in engagement withthe pin 50 by means of the spring 51. On the downward movement of theplatform which occurs when the scale beam is actuated the latch 47engages with the trip 52, thereby releasing the latch allowing theplatform to tilt under the weight of the filled bag discharging the baginto the chute 53. The platform is returned to its erected position bythe weight 54 carried by the rearwardly projecting arm 55 on theplatform. The pedestal has an opening 56 therein adapted to receive thisweight. The

releasing of the spout and of the platform' are timed so that they occursin'iultaneously,

thus providing for the automatic discharge material in the cylinderbeing minimized. I have illustrated and described one pracg t'icalembodiment of my invention. not attempted to illustrate or describeother template as I believe the disclosure made will enable thoseskilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a structure of the class described, the combination of a hopper,an ejector cylinder disposed so that a segmental portion of said.

cylinder projects into said hopper, the sides of said segmental portionbeing open providing side inlet openings, said cylinderhaving atangentially disposed discharge opening, a rotor comprising a spiderhaving radial blades mounted thereon and annular side members at theouter. ends of said blades whereby the material to be ejected may passlaterally to said blades from said side openings of said cylinder, andan agitator dis-' posed in said hopper above said cylinder and providedwith forwardly inclined radial arms so that they tend to lift thematerial upwardly, the arms being spaced to permit the material to fallbetween them by gravity.

2. In a structure of the class described, the combination of a hopper,an ejector cylinder disposed so that a segmental portion of said I haveadaptations and modifications which I con i cylinder projects into saidhopper, thesides of said segmental portion being open providing sideinlet openings, said cylinder having a tangentially disposeddischargeJQPGlllIlg, and a rotor comprising a spider jha'ving radial bladesmounted thereonand annular side members at the outer ends of said bladeswherebythe material to be ejected may pass laterally toisai-dv bladesfrom disposed so that'a segmental portion of said.

cylinder projects into said hopper, the sides said side openings of'saidcylinder.

3. In a structure of the class described, the

combination of a hopper, an ejector cylinder of said segmental portionbeing open providing siderinlet openings, said cylinder having atangentially disposed discharge opening, a rotor open at its sideswhereby thematerial to be ejected may passlaterally there- 1 to fromsaid side openings ofsa'id cylinder,

and an agitator disposed in. said hopper above said cylinder andprovided with for- \vardly inclined blades disposed so that they tend tolift the material upwardlywhile permitting the material to fall betweenthem by gravity.

4. In a structure of the class described, the

' combination of a hopper, an ejector cylinder I disposed so that-asegmental portion ofsaid cylinder projects into said hopper, the sidesof said segmental portion being open prov viding side inlet openings,said cylinder having a tangentially disposed discharge open- I ing, anda rotor open at its sides whereby the material to be ejected maypas'slaterall thereto from said side'openings of said .cy

inder.

radial blades disposed so that theytendto lift the material upwardly,the armsbeing In 1115 ,of the class the spaced'to permit the material tofall between them by; gravity. 6. In a structure of the ria to beejected passes thereto by gravity,

and an agitator vdisposed in said hopper above said cylinder and actingto lift the material engaged thereby, upwardly while permitting it tofall by gravity aid cylin- 7. In a structu;re of the class described,the

combinatlon of a hopper, an ejector disposed below the hopper so thatthe material to be a ejected passes theretoby gravity, and anagitater-disposed in said'hopperabove said cyl.-

inder and acting to lift the material engaged thereby upwardly whilepermitting it to fall by gravity to said cylinder.

Injwitness whereof, I'have hereunto set my hand.

v LEWIS, D. NELSON.

class described, the of comblnation of a hopper, an ejector cylinderdisposed below the hopper so that the inate-

